Pillow block bearing housing top



FIG. 1 is an isometric view of the left side, top and front of a pillow block bearing housing top showing my design;

FIG. 2 is a front view of my pillow block bearing housing top design;

FIG. 3 is a top view of my pillow block bearing housing top design; and,

FIG. 4 is a side view of my pillow block bearing housing top design.

The broken line showing of a pillow block bearing housing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a pillow block bearing housing top, as shown and described. 